530 
Miller and Carlton—The Cat's Kidney. 
Table IV. Cat 4. 
Right Kidney. Volume by displacement in water, 18.5 cc. Length of 
long axis, 48 mm. The volume of the left kidney was 18.5 cc., and the 
length 46 mm., but the volume was only found by displacement. The 
cortex of the right kidney by displacement was 13.5 cc. The medulla 
was 4.5 cc. 
A. 
B. 
A. 
B. 
Sec¬ 
tion. 
Line. 
Thick¬ 
ness. 
Entire 
area. 
Area 
me 
dul la. 
Area 
cortex 
Thick¬ 
ness 
of me¬ 
dulla. 
Entire 
volume 
of 
kidney. 
Entire 
volume 
of 
kidney. 
Volume 
of me¬ 
dulla. 
Volume 
of me¬ 
dulla. 
1 
1 
5.5 mm. 
.030 
.0005 
.0295 
1.75mm 
.8250 
1.650 
.0043 
.0087 
2 
1 
7.0 mm. 
.031 
.0005 
.0305 
7.0 mm. 
2 5900' 
3.010 
.5425 
1.0500 
2 
2 
.043 
.015 
.0.8 
3 
2 
7.5 mm 
.046 
.0145 
.0315 
7 5 mm. 
3.6375 
3.825 
.9937 
1.0875 
3 
3 
.051 
.012 
.039 
4 
3 
11.0mm 
.050 
.011 
.039 
11.0mm 
5.5000 
5.500 
1.2100 
1.2100 
4 
4 
.050 
.011 
.039 
5 
4 
10.0mm 
.050 
.012 
.038 
10.0mm 
4.1000 
5.000 
.9500 
1.2000 
5 
5 
.032 
.007 
.025 
6 
5 
7.0 mm. 
.033 
.005 
.028 
2.5 mm. 
1.1550 
2.310 
.0625 
.1250 
Total.. 
17.8075 
21.295 
3.7640 
4.6812 
Mean.. 
19 551 cc. 
4.22 
26 cc. 
THE RELATION OF THE CORTEX OF THE KIDNEY TO THE ENTIRE AREA 
OF SECTIONS TAKEN FROM FRESH KIDNEYS. 
These measurements are from the same set of kidneys which 
were used to compute the volume of the cortex. Only one of 
the pair of kidneys was used in each case and this was cut in 
five or six sections across the long axis. Theoretically two 
areas on the same line should be the same but separate 
readings were made and as the variation was enough to affect 
the percentage both readings were used. The results are shown 
in Table V in square decimeters. The average per cent, of cor¬ 
tex as seen in area in four fresh kidneys proved to be .700. 
